Gang-edger.



No. 640,902. Patented Jan. 9, I900.

- D. B. HANSON.

G A N G E D G E R.

(Application filed Sept. 6, 1899.)

{No Model.) 3 sheetssrieet n. Y

D. B. HANSON.

GANG EDGER.

(Application filed Sept. 6, 1899.1

Patented Jan. 9, I900.

3 Sheets$heet 2,

(N9 Model.)

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No. 640,902. Paten ted Jan. 9, I900.

D. B. HANSON.

GANG EDGER.

(Applicafion filed Sept. 6, 1899.) (No Modei.) -3 Sheets-Sheet 3.

Wane/we llnrrnn STATES PATENT @Fnrcn.

DEMPSY B. HANSON, OF SEATTLE, VASHINGTON.

GANG- EDG ER.

SPECIFICATION forming part of Letters Patent N 0. 640,902, dated January9, 1900.. Application filed September 6, 1899. Serial No. 729,627. (Nomodel.)

To ctZZ whom it may concern:

Be it known that I, DEMPSY B. HANSON, a citizen of the United States,residing at Seattle, in the county of King and State of \Vashington,have invented certain new and useful Improvements in Gang-Edgers, ofwhich the following is a specification.

My present invention relates to that class of wood-sawing machinescommonly known as gang-edgers, the construction being illustrated in theaccompanying drawings, where- Figure 1 is a top plan view of my improvededger; Fig. 2, a similar view of a slightlymodified form; Fig. 3, atransverse sectional view of Fig. 1, the feed-rolls being omitted; andFig. 4, a top plan view illustrative of a system of levers for operatingthe saw-shifting mechanism.

The object of my invention is to providea simple construction of thesaw-shif ting mechanism for an edger wherein the parts are duplicates ofeach other and but one pattern is necessary to their formation orconstruction.

Referring to the drawings and more particularly to Figs. 1 and 3, Aindicates the frame of the machine, B the saw arbor or spindle mountedtherein, and O the saws carried by the arbor and adjustablelongitudinally thereon. As is well known, it is oftentimes desirable tovary the distance between the saws in this class of machines, and meanshave already been devised and patented to this end. So far as I amaware, however, no one has heretofore so constructed and arranged thesaw-shifting mechanism that the parts are duplicates and that but oneform is necessary. To shift the saws, I employ a set of slides D, whichrest and are movable upon guides or ways E and F, suitable means beingemployed to prevent them from lifting therefrom, as illustrated in Fig.3.

As will be noticed upon reference to Figs. 1 and 3, the slides extendback from the guide rail or way E at right angles thereto for a shortdistance and then extend back to the guide rail or way F at an angle,the formation of each slide being the same. This formation of the slidethrows its bearing-points on the guide ways or rails out of line andserves to render it firm in its position thereon.

To assist in holding the slides D in position,

I employ arms G, which are connected to the under face of the slides andextend directly back to the outer guide or way F, where they engage arib H, formed thereon. Mounted upon the inner end of the slide is asaw-guide I, which engages the blade, as shown, and moves it back andforth on the arbor as the slide is moved or adjusted in its position onthe guides.

To maintain the slides in position, I employ a series of levers J, (onefor each slide,) pivotally mounted in an upright or projection K,extending up from the slide, as best shown in Fig. 3. The inner end ofthe lever is provided with a tooth or projection L, adapted to engagewith similar teeth M, formed on the under face of a bar N, extendingalong over the levers, as shown. As will be noted, said bar is providedwith a scale which facilitates the operation of adjustment of the sawson the arbor. Suitable springs are employed for holding the levers inengagement with the bar N.

In Fig. 2 I have shown a construction where in instead of the arms whichare connected to the slides being brought directly back to the guide Fthey are connected to the slides at an angle and extend away from thestraight portion of the slide in a direction opposite to the inclined orangled portion of the slide proper. \Vith this construction the pointsof bearing of the slide and arm are thrown farther out of line or aremore widely distributed, and as a consequence the bracing action securedis greater.

In Fig. 4. I have shown a construction wherein the slides are eachconnected to an actuating-lever O, which extends forward under the frontrolls, being pivoted at or near their centers in groups. These aredesigned to be used in place of the short levers J shown in the otherfigures. The construction of the slides or shifters is the same as shownin Figs. 1 and 3.

It will be noted from the foregoing description-that the various partsof all the shifters or slides are alike and that but one pattern isnecessary for each part. Shouldany of the slides or shifters becomebroken or worn, they can be much more readily replaced than where theparts are of different form and dimensions.

The slides or shifters maybe brought close together or separated to anydesired degree without interfering with each other in the least.

Having thus described my invention, what I claim is 1. In a gang-edger,the combination of a saw-arbor; a series of saws mounted thereon; aseries of slides of like form and dimensions, having their outer ends atan angle to the body of the slide; and connections between said slidesand the saws.

2. Ina gang-edger, the combination of a saw-arbor; a series of sawsmounted thereon; aseries of slides of like form and dimensions, havingtheir outer ends at an angle to the body of the slide; an arm connectedto each of said slides; a guide for said slides and arms; andconnections between said slides and the saws.

3. In a gang-edger, the combination of a saw-arbor; a series of sawsmounted thereon; guides or ways adjacent to said arbor; a series ofslides of like form and dimensions, mounted on said ways; said slideshaving a straight body portion with their outer ends bent at an anglethereto; an arm extending from each of the slides at an angle to thestraight portion and in a direction opposite to that of the bent portionof the slides; a guide for said slides and arms; and connections betweensaid slides and the saws.

4. In a gang-edger, the combination of a saw-arbor; a series of sawsmounted thereon; guides or ways E, F; a series of slid-es D of like formmounted thereon, said slides having their outer ends bent at an anglesubstantially as described; arms extending from the under face of theslides to the guide F; means for holding the slides in their adjustedposition; and connections between said slides and the saws.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

DEMPSY B. HANSON.

Witnesses:

J. FURTH, E. O. NEUFELDER,

